Lesson learned: trust no one.

Meaning: The moral of the story is that you should not trust anyone.

Choice of Words: Lesson is something that is learned or taught. Learned means to gain knowledge or understanding of something. Trust means to have confidence or belief in someone or something. No means not any. One refers to a single person or thing.

Alternative Expressions

Related Expressions

• They learned to trust and rely on each other.
• We learned to trust and rely on each other.
• She carefully counted her coins one by one.
• Details emerged slowly, one by one.
• She flips the pages gently one by one.
• One step forward, one fear conquered.
• One for all, all for one.
• Lesson taught life's lesson.
• He learned his lesson.
• Lesson learned, safety first, always.